Service difficulty report · Doubler · Boeing 7377H4

Difficulty date
August 12, 2021
Submitted
October 8, 2021
Operation
Air carrier
Aircraft
N415WN
Make and model
Boeing 7377H4
Aircraft serial
29836
Aircraft time
66,271 hours, 39,040 cycles
Part
Doubler
Condition
Cracked
Location
Fuselage
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

CRACK INDICATION FOUND ON HORIZONTAL PRESSURE DECK LOCATED BS 663 PLUS 3 INCHES AND BETWEEN LBL 30 AND LBL 40; CRACK LENGTH 0.400 INCHES. INSTALLED REPAIR PARTS DOUBLER [1] 1 EA; WEB [3] 1 EA; STIFFENERS [2] 7 E/A; FILLER[4] 1EA; FILLERS 6EA; FILLER 1 EA; FILLER 1EA; FILLER 1EA; BRACKET (FITTING)1EA BRACKET (2EA) LOC AT BSTA 663.75. AND BTW LBL 30 TO LBL 40. BRACKET (1EA) LOC AT BSTA 675 AND BTW LBL 30 TO LBL 40, STIFFENER (1EA) LOC. BTW BSTA 663.75 TO BSTA 675. AND BTW LBL 50 TO LBL 60. BRACKET (1EA) LOC BTW BSTA 663.75 TO BSTA 675 AND LBL50, BRACKET (1EA), SHIM (1EA) LOCATED BTW BSTA 675 TO BSTA 684 AND LBL 40, SUPPORT

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